CN105380754A - Absorbent articles with channels and signals - Google Patents

Abstract

The absorbent article comprises a topsheet, a backsheet, an absorbent core between the topsheet and the backsheet and a printed adhesive layer disposed between the topsheet and the absorbent core. The absorbent core may have channels and the adhesive printed layer may be visible through the topsheet.

Description

There is the absorbent article of passage and mark

The application is the Chinese invention patent application (applying date: on November 12nd, 2013; Application number: 201380059306.8 (international application no: PCT/US2013/069521); Denomination of invention: the absorbent article with passage and mark) divisional application.

Technical field

The present invention relates to the absorbent article of the mark with channelizing core and printing.

Background technology

For the absorbent article that receives and hold body excretions such as urine or feces known by the people of this area.The example of these goods comprises disposable diaper, training pants and adult incontinence product.Usually, the disposable diaper absorbent cores that comprises the permeable top flat of liquid towards wearer's body, the impermeable egative film of liquid towards wearer's clothes and be folded between the top flat of fluid permeable and egative film.

A kind of vitals of disposable absorbent article is absorbent cores/absorbing structure.Absorbent cores/structure generally includes super-absorbent polymer materials, and such as hydrogel forms polymeric material, also referred to as absorbent gelling material and AGM or super-absorbent polymer and SAP.This super-absorbent polymer materials guarantees that body fluid a large amount of between the operating period of absorbent article such as urine can be absorbed by described absorbent article and be locked, and provides low thus and bleeds back and good dry skin.

Traditionally, super-absorbent polymer materials is attached in the absorbent core structures with paper pulp and cellulose fibre.In order to make absorbent core structures thinner, propose to reduce or eliminate these cellulose fibres from absorbent core structures.

But, some absorbent core structures of the cellulose fiber content with minimizing are found, although be very thin before not adding carrier fluid, but the rigidity of increase can be had when partly loading or loading completely, especially in those regions of most of absorptive capacity comprising absorbent article, the proparea of such as diaper and crotch district.Found, by providing not containing super-absorbent polymer particles or not containing the particular permanent property passage of super-absorbent polymer materials, to achieve the liquid transmission of improvement, and thus achieve on whole absorbing structure and gather faster and more effective liquid-absorbent; Even if use less absorbing material, the performance improved surprisingly also can be realized.By fixing absorbing material or passage (by using binding agent), passage becomes more lasting, such as, and reserve channel during use absorbing structure, when applying friction to absorbing structure, or when the wetted thus absorbing material of absorbing structure expands.In addition, also find by providing this type of passage, such as in the proparea of absorbent cores/structure and/or in the crotch district of absorbent cores/structure, provide this type of passage, the flexible diaper with increase can be provided, in its whole use procedure, keep its performance surprisingly simultaneously.

Owing to changing the functional to improve such as absorbability, stickiness or to reduce cost of absorbent cores, the performance of goods and/or outward appearance may be subject to negative effect.Can make an effort to improve the part of goods or goods so that for they provide specific appearance.In some instances, goods can be modified to pass on or indicate care-giver's passage to be present in the absorbent cores of goods, and passage is there to produce faster and more effective liquid-absorbent.Can such as carry out this type of instruction via the binding agent of external graphics and/or inner printing or pass on.Therefore, need to comprise the absorbent article of the improvement of the absorbent cores with passage, described absorbent article shows excellent performance and comparatively attractive in appearance.

Summary of the invention

Absorbent article herein can provide top flat, egative film, is arranged on the absorbent cores between top flat and egative film and is arranged on the adhesive phase of the printing between top flat and absorbent cores.Absorbent cores can comprise passage, and binding agent printed layers can be through top flat visible.

The present invention includes following embodiment:

1. an absorbent article, comprises top flat, egative film, is arranged on absorbent cores between described top flat and described egative film, it is characterized in that described absorbent article also comprises the adhesive phase of the printing be arranged between described top flat and described absorbent cores; Wherein said absorbent cores comprises passage; And the adhesive phase of wherein said printing is visible through described top flat.

2. the absorbent article according to embodiment 1, also comprises the acquisition layer be arranged between described top flat and described absorbent cores, and the adhesive phase of wherein said printing is printed on described acquisition layer; Preferably the color of the adhesive phase of wherein said printing is different from the color of described acquisition layer; More preferably wherein said acquisition layer has the surface adjacent with described absorbent cores, and the adhesive phase of described printing is printed on the surface adjacent with described absorbent cores of described acquisition layer.

3. the absorbent article according to embodiment 1, the adhesive phase of wherein said printing is rendered as pattern; Preferably wherein said pattern mates the shape of described absorbent cores passage substantially.

4. the absorbent article according to embodiment 3, wherein said absorbent cores passage has non-linear shape; Preferably wherein said absorbent cores passage becomes profile.

5. the absorbent article according to embodiment 3, wherein said absorbent article also comprises the figure be printed on described egative film; The described figure be preferably wherein printed on described egative film mates the adhesive phase pattern of described printing substantially, thus indicates the position of described passage.

6. the absorbent article according to any one of foregoing embodiments, wherein said top flat comprises embossing; Preferably wherein prepare described absorbent article by assembling absorbent article components on a production line, and described top flat embossing performs online.

7. the absorbent article according to embodiment 5, comprise pair of channels, described passage aligns symmetrically around the length of described egative film and width, and the ratio of the described figure length in the vertical of the length of wherein said egative film (A ') and the position of the described passage of instruction (L ') is 2.2 to 2.7; Preferably wherein the ratio of A ' and L ' is 2.3 to 2.5; More preferably wherein the ratio of A ' and L ' is 2.4.

8. the absorbent article according to embodiment 5, comprise pair of channels, described passage aligns symmetrically around the length of described egative film and width, and the ratio of the length of described figure in described longitudinal direction of 1/2nd (B ') of the length of wherein said egative film and the position of the described passage of instruction (L ') is 1.0 to 1.4; Preferably wherein the ratio of B ' and L ' is 1.1 to 1.3; More preferably wherein the ratio of B ' and L ' is 1.2.

9. the absorbent article according to embodiment 5, comprise pair of channels, described passage aligns symmetrically around the length of described egative film and width, the width of wherein said egative film (P ') and obtaining and the ratio of space in the horizontal between the described figure indicating the position of described passage (F ') is 8.0 to 9.8 in the midpoint of the length (in described longitudinal direction) of described egative film; Preferably wherein the ratio of P ' and F ' is 8.5 to 9.4; More preferably wherein the ratio of P ' and F ' is 8.9.

10. the absorbent article according to embodiment 5, comprises at least 2 pairs of passages, and each passage aligns around the length of described egative film and width symmetrically relative to its pairing passage, wherein:

A the described figure of the position of () instruction internal channel does not extend beyond the described figure of the position of instruction outer tunnel in the cross direction; And/or

B () indicates the described figure of the position of described internal channel not extend beyond described internal channel in described longitudinal direction, and described internal channel does not extend beyond described absorbent cores in described longitudinal direction; And/or

C () indicates the described figure of the position of described outer tunnel not extend beyond described outer tunnel in described longitudinal direction, and described outer tunnel does not extend beyond described absorbent cores in described longitudinal direction.

11. 1 kinds of absorbent articles, comprise top flat, egative film, the acquisition layer that is arranged on the absorbent cores between described top flat and described egative film and is arranged between described top flat and described absorbent cores; It is characterized in that described absorbent cores comprises passage; At least one in wherein said top flat, egative film and described acquisition layer has printed article; And wherein said passage and described printed article not overlapping.

12. absorbent articles according to embodiment 11, wherein said printed article has fluid properties, and described fluid is the mixture of ink, binding agent or ink and binding agent.

13. absorbent articles according to any one of embodiment 11 to 12, wherein said acquisition layer has the surface adjacent with described absorbent cores, and binding agent printed layers is printed on the described acquisition layer adjacent with described absorbent cores on the surface.

14. absorbent articles according to any one of embodiment 11 to 13, also comprise the printed pattern be positioned on described egative film.

15. absorbent articles according to embodiment 11, wherein said printed article is positioned on described egative film.

16. absorbent articles according to embodiment 11, wherein said printed article is positioned on described top flat.

17. absorbent articles according to any one of embodiment 11 to 16, wherein utilize aligning make described passage and described printed article not overlapping.

18. 1 kinds of absorbent articles, comprise top flat, egative film, the acquisition layer that is arranged on the absorbent cores between described top flat and described egative film and is arranged between described top flat and described absorbent cores, it is characterized in that described absorbent cores comprises non-linear channels; And wherein figure is printed on described egative film.

19. absorbent articles according to embodiment 18,

Wherein said acquisition layer has the surface adjacent with described absorbent cores;

Wherein the adhesive phase of patterning is printed on the surface adjacent with described absorbent cores of described acquisition layer; And

Adhesive phase and the described egative film figure of wherein said printing match each other substantially; The adhesive phase preferably wherein printed and described egative film figure substantially match each other and mate the shape of described non-linear channels.

20. absorbent articles according to any one of foregoing embodiments, the adhesive phase of wherein said printing is mark, and described mark passes on one or more beneficial effects of described absorbent cores passage to consumer.

Accompanying drawing explanation

Fig. 1 shows the plane graph of the diaper according to a non-limiting example.

Fig. 2 A shows the perspective view of the absorbing structure according to a non-limiting example.

Fig. 2 B shows the perspective view of the alternative absorbed layer according to a non-limiting example.

Fig. 2 C shows the perspective view of the absorbing structure that can be combined with described absorbing structure according to a non-limiting example.

Fig. 3 A shows the perspective view of the alternative absorbed layer according to a non-limiting example.

Fig. 3 B shows the perspective view of the alternative absorbing structure according to a non-limiting example.

Fig. 4 A shows the perspective view of the alternative absorbed layer according to a non-limiting example.

Fig. 4 B shows the perspective view of the alternative absorbed layer according to a non-limiting example.

Fig. 5 shows the sectional view of the absorbent cores according to a non-limiting example.

Fig. 6 shows the sectional view of the alternative absorbent cores according to a non-limiting example.

Fig. 7 shows the sectional view of the alternative absorbent cores according to a non-limiting example.

Fig. 8 shows the sectional view of the alternative absorbent cores according to a non-limiting example.

Fig. 9 shows the sectional view of the alternative absorbent cores according to a non-limiting example.

Figure 10 shows the sectional view of the alternative absorbent cores according to a non-limiting example.

Figure 11 shows the sectional view of the alternative absorbent cores according to a non-limiting example.

Figure 12 shows the sectional view of the alternative absorbent cores according to a non-limiting example.

Figure 13 shows the sectional view of the alternative absorbent cores according to a non-limiting example.

Figure 14 shows the method/equipment of the formation absorbent cores according to a non-limiting example, and described absorbent cores comprises two absorbing structures of the present disclosure.

Figure 15 and 16 shows the plane graph comprising the non-limiting example of the absorbent article of egative film figure of the present invention.

Figure 17 A, 17B, 17C and 18 show the top view of the non-limiting example of the pattern of adhesive of printing.

Figure 19 shows the plane graph of the shape of approximate passage and the egative film figure of profile.

Detailed description of the invention

definition

" absorbent article " refers to the device absorbing and hold body exudates, more specifically refers to the device of the various effluents that health places to absorb and accommodation is discharged from health be close to or close to wearer.Absorbent article can comprise adult diaper and baby diaper (1), comprises trousers such as toddler training pants and adult incontinence undergarments and feminine hygiene products such as sanitary towel and sanitary pad and adult incontinence pads and chest pad, nursing pad, bib, wound dressing product etc.Absorbent article also can comprise floor-cleaning goods, food industry goods etc.As used herein, term " body fluid " or " body exudates " include but not limited to urine, blood, vaginal secretions, milk, perspiration and feces.

As used herein, " diaper (1) " refers to the device being intended to be close to the various effluents that wearer skin places to absorb and accommodation is discharged from health.Diaper (1) is generally worn so that around the waist of wearer and leg around lower body by baby and incontinent patients.The example of diaper (1) comprises baby diaper or adult diaper (1) and pant like diaper (1) such as training pants.Diaper can comprise fastening system, and described fastening system can comprise at least one fastening member (8) and at least one touch-down zone (9), and also can comprise lower limb hoop (10) and elastic component (11)." training pants " used herein refers to the disposable garment with waist opening and leg opening for baby or adult wearers's design.By the lower limb of wearer being stretched into leg opening and trousers being lifted the appropriate location around wearer's lower body, can by trousers through wearer appropriate location with it.Trousers carry out preform by any suitable technology, the each several part of goods is bonded together by bonding (such as, stitching, welding, binding agent, adhesive bonds, fastener etc.) that is that described technology includes but not limited to utilize refastenable and/or not reproducible fastening.Along goods circumference Anywhere can to trousers preform (such as, side fastening, Attacking Midfielder fastening).

" disposable " is used to describe the goods (namely their purports are dropped after a single use, and can be recovered recirculation, compost treatment or the mode process with other environmentally compatibles) not generally being intended to be washed or otherwise recover or reuse herein.

As used herein, " absorbing structure (13) " refer to the three dimensional structure that can be used for absorption and receiving fluids such as urine.Absorbing structure (13) can be absorbent article absorbing structure (13) or can be absorbent article absorbent cores (7) only a part, i.e. the absorption piece of absorbent cores (7), as described in detail herein.

As used herein, " super-absorbent polymer materials " refers to water-insoluble polymeric material substantially; As used " Centrifuge Retention Capacity " test (Edana441.2-01) to measure, described material can absorb 0.9% saline solution in the demineralized water of at least 10 times of (and at least 15 times or at least 20 times usually) himself weight.

As used herein, " non-woven material " refers to the fleece be made up of directed or arbitrary orientation fiber, do not comprise paper wood and mix the woven product of binder yarn or long filament, knit product, bunch to become the product of product, stitchbonded product or wet grinding felting, no matter whether in addition by acupuncture.Non-woven material and manufacturing process thereof are known to the people of this area.In general, the technique preparing non-woven material is included on molded surface lays fiber, comprises spin processes, meltblown, combing method, air lay, wet-laying and their combination.These fibers can come from natural fiber or staple fibre, and can be short fiber or continuous filament yarn or can original position be formed.

As used herein, " visible " refers to and can be perceived by the naked eyes of the mankind.

there is the absorbing structure (13) of passage

The invention provides the absorbent article with absorbent cores, described absorbent cores comprises the mark of the printing of passage and this passage of reception and registration.The present invention relates to the absorbent article with passage, they are disclosed in U.S. Patent application 13/491, and 642,13/491,643,13/491,644 and 13/491, in 648, these patent applications are all filed on June 10th, 2011.

Absorbing structure (13) herein comprises support sheet (16), and described support sheet has the absorbed layer (17) of absorbing material (50).Absorbing material (50) at least comprises super-absorbent polymer materials and optionally cellulosic material, such as cellulose, the cellulose of such as paper pulp or modification.

Absorbing structure (13) also comprises one or more hereafter described in detail adhesive materials.Absorbed layer (17) is for three-dimensional and comprise the first vertical passage (26) and second vertical passage (26) substantially being substantially substantially free of described super-absorbent polymer materials.Other material can be present in described passage (26), as detailed below, and such as one or more adhesive materials (40 described; 60).

Absorbing structure (13) and absorbed layer (17) have longitudinal size and average length L separately, and such as, longitudinal size along this structure or layer extends; And lateral dimension and average width W, such as, lateral dimension along this structure or layer extends.Absorbing structure (13) and absorbed layer (17) have separately in use towards the proparea of user front portion, in use towards back zone and the front crotch district gone between back zone at user rear portion, described district extends the full transverse width of this structure/layer separately, and has 1/3 of the average length of this structure/layer separately.

Absorbing structure (13) and absorbed layer (17) have central longitudinal axis X, central transverse Y perpendicular to described central longitudinal axis X separately; The transverse edge (19) that the vertical side of the edge that a pair of extending of described absorbed layer (17) and described absorbing structure (13) longitudinal size had separately along this structure or layer is relative is relative with a pair, such as, in use towards the anterior front transverse edge of user (wearer) with in use towards the rear transverse edge at user rear portion.Vertical side of the edge (18) and/or the transverse edge (19) of absorbing structure (13) or absorbed layer (17) can be parallel to central longitudinal axis and/or central transverse respectively, or one or more curve that can be, and such as in crotch district, provide narrower lateral dimension.Usually, longitudinal side mirror image each other on longitudinal X-axis line.

The longitudinal X-axis line in center of absorbed layer (17) limits first longitudinal sidepiece and second longitudinal sidepiece (20) of absorbed layer (17) respectively, and they are called longitudinal sidepiece (20) in this article.Therefore each in described longitudinal sidepiece is present in described proparea, crotch district and back zone, and therefore there is the proparea of the first longitudinal component and the proparea etc. of the second longitudinal component.In some embodiments herein, the described longitudinal component of absorbed layer (17) mirror image each other on the X-axis line of this layer.

Absorbed layer (17) at least comprises the first passage (26) and second channel (26) that are substantially free of (such as not containing) described super-absorbent polymer particles, and described passage (26) extends through the thickness (highly) of absorbed layer (17).(should be appreciated that unexpectedly, a small amount of negligible super-absorbent polymer particles can be present in passage, and they do not contribute to overall functionality).When absorbed layer (17) comprises cellulosic material or cellulose, in certain embodiments, described first passage and second channel (26) be not also containing this type of cellulose/cellulosic material.

First passage (26) is present in described first longitudinal sidepiece of absorbed layer (17), and second channel (26) is present in described second longitudinal sidepiece of absorbed layer (17).

First passage and the respective longitudinal extension substantially of second channel (26), this often means that each passage (26) than extending more on lateral dimension on longitudinal size, and the elongation usually on longitudinal size is at least twice of the elongation on lateral dimension.

Therefore, this comprises completely longitudinally and is parallel to the passage (26) of the longitudinal direction (being namely parallel to described longitudinal axis) of described absorbed layer (17); And this comprises and can be bending passage (26), precondition is the average transverse (optionally at least 1.5 or at least 2.0 times to this average transverse) that radius of curvature at least equals absorbed layer usually; And this comprises as lower channel (26), it is for straight but become (such as, from 5 °) 30 ° at the most with the line being parallel to longitudinal axis, or such as at the most 20 °, or the angle of 10 ° at the most.This also can be included in the wherein angled passage of tool, precondition be passage two parts between the angle ranging from least 120 °, at least 150 °; And in any of these cases, precondition be passage extend longitudinally beyond horizontal expansion.

In certain embodiments, can not there is completely or substantially be present in the interconnection at least described crotch district, or without this type of passage.

Each had mean breadth W ' in described first passage and second channel (26), it is at least 4% of the mean breadth W of described absorbed layer (17), or such as W ' is at least 7% of W; And/or at the most 25% of such as W, or at the most 15% of W; And/or such as at least 5mm; And such as 25mm at the most, or such as 15mm at the most.

Each had average length L in described first passage and second channel (26) ', it can be such as at the most 80% of the average length L of described absorbed layer (17); If passage (26) exists only in proparea, or exists only in crotch district, or exists only in back zone, then L ' is at the most 25% of such as L, or at the most 20% of L, and/or L ' is at least 5% of such as L, or at least 10% of L; And/or L ' is such as at least 10mm, or at least 20mm; If passage (26) extends in back zone in described crotch district and proparea with optionally, then L ' is at the most 80% of such as L, or at the most 70% of L, and/or L ' is at least 40% of such as L, or at least 50% of L.When difference between diversity channels capable in longitudinal axis, the length L ' of passage is the length by the projection measurement on longitudinal axis.

Passage (26) can be so-called " lastingly " passage (26) usually.So-called lasting, refer to that the integrity of passage (26) is kept all at least in part in drying regime and wetting state (being included in during applying friction thereon by wearer).Whether following wetted path integrity test can be used for TCH test channel after moistening is saturated is permanent, and is permanent to which kind of degree.

Lasting passage (26) is by providing one or more adhesive materials to obtain, described adhesive material fixes described absorbing material (50) and/or such as described passage (26) or described absorbed layer (17), and/or described support sheet (16) is fixed in described passage (26) or its part.Absorbent cores (7) can comprise the lasting passage formed through passage in particular by bonding first support sheet (16) and the second support sheet (16'), as being exemplarily illustrated in such as Fig. 7 and Figure 13.Usually, glue can be used via passage to these two kinds of support sheet that bond, but also likely be bondd by other known method such as ultrasonic bonds or hot adhesion.Can bond continuously or intermittently bonded supporting layer along passage.

In fact, the present inventor has observed this type of passage and provides fast liquid acquisition, this reduces risk of leakage.Permanent passage helps to avoid the absorbed layer in evacuation area saturated (this type of saturated increase risk of leakage).In addition, compared with expection, when the present inventor finds to be reduced (by providing not containing the passage of this type of material) when the total amount of super-absorbent polymer materials in absorbing structure reduces surprisingly, the fluid handling properties of absorbing structure or diaper improves.Permanent passage also has additional advantage, and absorbing material can not move at in-core in a moistened state, and remains on its desired location, thus provides good stickiness and absorption of fluids.

Such as, the present inventor according to the WAIIT test comprising the core of two absorbed layers with lasting passage had as shown in Figure 4 A, relative to having mutually commensurability AGM and glue but not having the similar core of passage, compares the waste of the AGM in wetting state.

In brief, the revocable absorbing particles quantity of material during core is determined to be under wetting situation in WAIIT test.In this test, the capacity of absorbent cores moistening to 73% is also transversely cut therebetween and allows it fall from predetermined altitude, and measures the loss of material.About the other information of described test is found in US2008/0312622A1.

As a result, this core has the wet fixation (standard deviation=5%) of the AGM of 87%, this in contrast to the wet fixation (standard deviation=5%) of 65% of channel-less contrast core.In this example, by the following method passage is made for lasting: use two layers of thermoplastic cellulosic binders (applying twice Fuller1151 with 5gsm) and one deck hot-melt adhesive (with 5gsm apply Fuller1358) adhesively bonding passage in described two support sheet.

wetted path integrity test

This test is designed for and checks the integrity of passage after moistening is saturated.Described test can directly be carried out to absorbing structure or to the absorbent cores comprising absorbing structure.

1. the length (millimeter) of passage is measured (if passage is not straight, measuring the length of curve through channel center) in the dry state.

2. then absorbing structure or core being immersed in 5 liters of concentration is in the synthetic urine solution " saline solution " of 9.00gNaCl/1000ml solution, and described saline solution prepares by being dissolved in by appropriate sodium chloride in distilled water.Solution temperature is necessary for 20+/-5 DEG C.

3., in this saline solution after submergence 1 minute, take out absorbing structure or core and catch its one end to keep 5 seconds vertically to drain solution, then that it is on a horizontal surface open and flat, make towards garment side downwards (if this side is discernible).If absorbing structure or core comprise stretching element, then absorbing structure or core are all strained along X and Y size and make not observe contraction.The ends/edges edge of absorbing structure or core is fixed on described horizontal surface, ungauged regions can be occurred.

4. absorbing structure or core are coated with the rigid plate of approrpiate wts, and its size is as follows: length equals the development length of absorbing structure or core, and width equals absorption maximum structure transversely or core width.

5. apply region upper 30 second of pressure in rigid plate mentioned above of 18.0kPa.Based on the gross area calculating pressure that rigid plate covers.Obtain pressure by geometric center additional weight being placed in rigid plate, make the combined wt of rigid plate and additional weight cause the pressure of 18.0kPa on the rigid plate gross area.

6. after 30 seconds, remove additional counterweight and rigid plate.

7. immediately press the cumulative length of the complete part of the maintenance of millimeter Measurement channel; (if passage is not straight, then measure the length of curve in the middle of passage).If keep complete without channel part, then passage is not permanent.

8. the integrity percentage ratio of permanent passage is by with keeping complete channel part cumulative length divided by the passage length under drying regime, and is multiplied by 100 with business subsequently and calculates.

Advantageously, according to this test, have at least 20% according to lasting passage of the present disclosure, or 30%, or 40%, or 50%, or 60, or 70%, or 80%, or the integrity percentage ratio of 90%.

As shown in such as Fig. 5 and 9, one or more adhesive materials (60) can be present between described support sheet (16) and described absorbed layer (17) or its part (being such as called herein " the second adhesive material ").Such as, adhesive material is put on the part overlapped with passage (26) of described support sheet (16), make in described passage, support sheet can utilize described adhesives to conduit wall or its part or be bonded to another kind of material, as described herein; And/or binding agent can put on the part being intended to the support sheet (16) overlapped with absorbing material (50), thus fix described material and avoid it to move in described passage in a large number; Binding agent can be applied to the substantially whole surf zone of support sheet (16), such as, substantially apply continuously and/or equably.It can be such as by printing, slot type coating or the hot-melt adhesive spraying applying.

In addition or alternatively, absorbing structure (13) can comprise one or more adhesive materials (40) (being called " the first adhesive material ") on the described absorbed layer (17) or its part that are applied to and are supported by described support sheet (16) herein, such as, combine/be deposited in described support sheet (16) in described absorbing material (50) and described support sheet (16) with after forming absorbed layer (17).It can be such as thermoplastic fibre matter binding agent, as mentioned below.In certain embodiments, it is applied on absorbed layer (17) serially, therefore be applied to absorbing material (50) go up and be applied in passage (26), thus support sheet is also optionally also attached in described passage by fixing absorbed layer, as mentioned above.This is such as illustrated in Fig. 5 to 11.

Should be appreciated that the first adhesive material and the second adhesive material can be the binding agent of identical type, such as, as thermoplastic hot melt adhesive, such as described below, the difference therefore between the first binding agent and the second binding agent is its position be applied in.

In certain embodiments, one or more adhesive materials described are at least present in passage (26), such as at least described first adhesive material, or described first adhesive material and the second adhesive material.Therefore it can be present in (height of extension absorbed layer (17) and its length) on longitudinal wall of passage (26).If support sheet (16) folding of material is in described passage (26) or its part, such as support sheet (16) has the undulation portion of stretching in described passage (26) or its part, then described undulation portion can be fixed to described wall or its part, thus guarantees that passage (26) is kept during use (keeping at least in part).This is such as illustrated in Figure 10 and 11.

First passage and second channel (26) can mirror images each other relative to the central longitudinal axis (X-axis line) of absorbed layer (17)/structure.

In certain embodiments and such as shown in the figure, there is not the passage (26) with the described longitudinal axes coincident of described absorbed layer (17).Passage (26) can be spaced apart from each other on their whole longitudinal size.Minimum spacing D can be such as at least 5% of the average transverse W of layer, or at least 10% of such as W, or at least 15% of W; Or such as can be at least 5mm, or such as at least 8mm.

In addition, in order to reduce the risk of fluid leaks, longitudinal main channel (26) do not extend to any transverse edge (19) and/or the longitudinal edge (18) of absorbed layer (17) usually, such as shown in the figure.Usually, the minimum range I between passage (26) and immediate longitudinal edge corresponds at least 5% of W, or at least 10% of such as W.In certain embodiments, this distance is such as at least 10mm; Minimum range F between the transverse edge (19) of passage and immediate absorbed layer (17) can be such as at least 5% of the average length L of this layer.

Absorbing structure can comprise only two passages, such as, only in proparea, such as, shown in Fig. 2 B; Or such as in center (crotch) district, and optionally extend in proparea and/or back zone, as shown in Figure 2 A all.

Absorbing structure (13) can comprise more than two these type of passages (26), such as at least 4, or at least 5 or at least 6 passages.Some or all in these passages can be substantially parallel to each other, be all such as straight and completely longitudinal, and/or two or more or all can on longitudinal axis mirror image each other, or two or more can be bending or angled and such as mirror image each other on longitudinal axis, and two or more can be differently bending or straight, and such as mirror image each other on longitudinal axis.This is such as illustrated in Fig. 3 A and 3B.

Such as the proparea of absorbed layer (17) can comprise two or more passages (26), described passage is mirror image each other on the longitudinal axis of this layer usually, and crotch district can comprise two or more passages (26), described passage is mirror image each other on the longitudinal axis of this layer usually, such as be illustrated in Fig. 4 A, and the latter optionally extends in proparea and/or back zone, there is any applicable size and above-mentioned further feature.Optionally, other passage can be present in back zone, such as two, such as, is illustrated in Fig. 4 B.

First passage and second channel (26) and optionally other passage (26) can be positioned in described absorbed layer (17), make to exist with the center of described longitudinal axes coincident longitudinal bar, described bar is not containing any passage (26); Described absorbing material (50) can be present in described bar substantially continuously.Such as, described bar can have minimum widith D, and described minimum widith D is at least 5% of W, or at least 10% of W, and/or such as at least 5mm, or at least 10mm or at least 15mm, and/or 40mm even at the most.

In certain embodiments, in the longitudinal bar in the described center between two adjacency channels (26), the average basis weight of absorbing material (50) or the average basis weight of described super-absorbent polymer materials are at least 350, and such as 1000 grams/m at the most ², or such as from 450 grams/m ², and such as 750 grams/m at the most ².

In certain embodiments, adjacent each first passage and second channel, and optionally adjacent with described other passage, described absorbing material (50) exists substantially continuously.

Absorbing structure (13) generally includes one or more other materials (such as another material layer) to cover absorbed layer (17), and it is called other material in this article; Described other material can be the layer comprising binding agent, such as, be positioned on the surface of the absorbed layer (17) being intended to the absorbing structure (13) contacting this paper.Therefore, described other material can be intended to the surface of described absorbed layer (17) placed adjacent of absorbing structure (13) on comprise adhesive material.

Resulting structures is called in this article " absorbent cores (7) ".The example is illustrated in Fig. 5 to 13.

This other material can be another kind of absorbing structure (13 '), it has the second absorbed layer (17 ') and the second support sheet (16 '), these two absorbed layers (17,17 ') are made all to be interposed in described support sheet (16; 16 ') between; It can be another kind of absorbing structure (13 ') of the present disclosure, has two or more passages (26 ') as described herein, and is such as illustrated in Fig. 5,6,7, in 8; Such as, or it can be as described herein but channel-less absorbing structure, is illustrated in Fig. 9; And/or it can be the as described herein but absorbing structure of adhesive-free.

Second absorbing structure (13 ') can be identical with the first absorbing structure (13), or all can be both them and of the present disclosurely have passage (26; 26 ') absorbing structure; But they can not be identical, such as, there is different passages, the passage (being such as illustrated in Fig. 8) of different number, different binding agents, different binding agents applying mode or their combination.

The passage (26 ') of the passage (26) of the first absorbing structure (13) or some and the second absorbing structure (13 ') in them or some in them can coincide with one another and overlapping; Such as completely or such as only partly to overlap and only partly overlapping; Or passage (26; 26 ') some or all in can not overlap and not overlapping even each other.In certain embodiments, they are roughly mutually the same, and the passage of a structure (26) overlaps and the passage (26) of another structure overlapping substantially completely.This is such as shown in Figure 12.

In certain embodiments, described other material can be a part for support sheet (16), and described part is folded to absorbed layer (17) and goes up also peripherally edge seal, thus encapsulating absorbed layer (17).

In certain embodiments, described other material is another kind of support sheet (16 '), namely absorbing structure (13) is coated with another kind of support sheet (16 '), and described absorbed layer is sandwiched between described two support sheet subsequently.

In certain embodiments, described other material can be capturing material layer (70) and/or gathers sheet material (12), such as, be sealed to described support sheet (16).In certain embodiments, described other material comprises another kind of absorbing structure, such as above-mentioned any one in those, or other support sheet (16 '), and subsequently with capturing material layer (70) and optionally another kind ofly gather sheet material (12) and combine.This is such as shown in Figure 11.

Described other material also can be the capturing material layer (70) with described absorbed layer (17) adjacent existence, capturing material layer (70) optionally comprises the cellulose fibre of chemical crosslinking, and described capturing material layer is supported in the second support sheet (16 ').Then absorbed layer (17) and capturing material layer (70) can be sandwiched between the described support sheet (16) of the first structure and described second support sheet (16 '), as being exemplarily illustrated in Figure 12.Capturing material layer (70) also can comprise passage (26 ') further, substantially completely overlaps particularly, as shown in figure 13 with the passage (26) of described first absorbing structure (13).

The support sheet (16) of the first structure and/or the second support sheet (16 ') of capturing material layer (70) can be folded into the passage (26) of the first absorbing structure (13) and/or are optionally folded into the passage (26 ') of capturing material layer (70) (when it is present), or be folded into the part of these passages (26,26 ').One or more adhesive materials described can at least be present in passage (26,26 ') or its part, and support sheet (16; 16 ') can be attached to each other by one or more in these adhesive materials in described passage (26,26 ').Another kind of second binding agent (60 ') can be present between the second support sheet (16 ') and capturing material layer (70).Except thermoplastic adhesives (40), also another kind of binding agent (not shown) can be placed between capturing material layer (70) and absorbed layer (17), thus improve the adhesiveness of these two layers.

In any of these cases, described other material can be sealed to support sheet (16) to encapsulate absorbed layer (17 with its periphery edge of tailing edge; Optionally 17 ').

In any of these cases, support sheet (16) or acquisition layer/sheet material can be folded into (namely rising and falling into) described passage (26) or its part.This is illustrated in such as Fig. 6, and 7, in 8.

It can be attached to the support sheet (16) of absorbing structure of the present disclosure (13) in described passage (26), such as, by adhesive material as described herein.Alternatively or in addition, it also can be attached to the wall of passage (26 and/or 26 ') or its part.

In certain embodiments, absorbing structure (13) comprises this type of another kind of material of overlapping described absorbed layer (17), and optionally press member be applied in the part overlapped with described passage (26 and/or 26 ') described support sheet (16) and/or be applied to described other material, thus described support sheet (16) and/or described other material are added the described passage that is pressed into absorbing structure (13) and/or add be pressed into another kind (second) absorbing structure 913 ') passage (therefore: add and be pressed into passage 26 and/or 26 ' (when it is present)) of (when it is present), thus help the described undulation portion of preparation and/or help to make described other material and described support sheet (16) be attached to each other in described passage (26 and/or 26 '), if there is adhesive material as described herein.

Press member can be the pressure roll with bossing, described bossing has size, shape, the pattern of described passage (26 and/or 26 ') substantially, and they can overlap (that is: coordinate) in the described part of the support sheet (16) overlapped with described passage (26 and/or 26 ') or other material.

In certain embodiments, described (such as second) support sheet (16 ') in addition can be folded into passage (26 and/or 26 ') or its part wider than absorbing structure to allow the second support sheet (16 '), thus can be attached to the first support sheet (16).This is such as illustrated in Fig. 6, in 7 and 8.

Absorbent cores (7) comprises two (or more) absorbing structures (13 wherein; 13 ') (passage (26 as herein described is comprised; 26 ') in embodiment), one or two or more in the passage (26) of an absorbing structure (13) or all can substantially be superimposed upon on the passage (26 ') of adjacent absorbent structure (13 ').Thus gained absorbent cores (7) is for having passage (26; 26 ') absorbing structure (13 '; 13 ') lamilated body, wherein passage (26; 26 ') absorbed layer (17 is extended substantially across; 17 ') thickness.This is such as shown in Figure 12.

In addition or alternatively, one or two or more in the passage (26) of an absorbing structure (13) or be not all superimposed upon on the passage (26 ') of adjacent absorbent structure (13 '); They can be such as complementary with the passage (26) of adjacent structure.So-called complementary, refer to that the passage (26 ') of the second absorbing structure (13 ') forms the extension of the passage (26) of the first absorbing structure (13).

In certain embodiments, absorbent cores (7) can comprise two or more absorbing structures (13), one of them is structure of the present disclosure, and one for having the absorbing structure (13) of support sheet (16 '), described support sheet has the absorbed layer (17 ') (having super-absorbent polymer materials) without passage and/or adhesive-free thereon.

If the second absorbing structure (13 ') is present in absorbent cores (7), then it can mode as described above and comprise one or more binding agents for the above reasons.

Such as, it can exist and makes it with the passage (26) of at least the first absorbing structure (13) and/or overlap with its passage (26 ') (when it is present).

absorbing material (50)

Absorbed layer (17) comprises absorbing material (50), described absorbing material comprises super-absorbent polymer materials (such as, granule), described material optionally combines with cellulosic material (comprising the wood pulp of such as cellulose, pulverizing in fibers form).(such as another kind of i.e. the second absorbing structure (13 ') can comprise absorbing material to above-mentioned other material, and following content is also applicable to it.

In certain embodiments, absorbing material 50 can comprise by weight at least 60%, or the super-absorbent polymer materials of at least 70% and at the most 40% or at the most 30% cellulosic material.

In some other embodiments, absorbed layer (17) comprises absorbing material (50), described absorbing material is made up of absorbing polymeric material such as granule substantially, such as, there is the cellulosic material being less than (absorbing material (50)) 5 % by weight; And described absorbed layer (17)/absorbing structure (13) can be free of cellulosic material.

Usually, super-absorbent polymer materials is particle form.The granule being applicable to absorbed layer (17) can comprise from the known any super-absorbent polymer particles of superabsorbent material document, such as " ModernSuperabsorbentPolymerTechnology ", described in F.L.Buchholz, A.T.Graham, Wiley1998.Absorbent polymer particles can be usually derive from inverse suspension polymerization type spherical, class is spherical or erose granule, such as wienerwurst shape granule or oval granule.Also optionally make particle aggregation at least extremely to a certain degree to form larger irregular particle.

In some embodiments herein, overall absorption material (50) and/or described particulate superabsorbent pinching laminate material at least have high-adsorption-capacity, such as, have such as at least 20g/g, or the Centrifuge Retention Capacity of 30g/g.The upper limit can be such as 150g/g at the most, or 100g/g at the most.

In some embodiments herein; absorbing material (50) comprises super-absorbent polymer particles or is made up of super-absorbent polymer particles; described granule is formed by acrylic acid polymer/polyacrylate polymers; such as have 60% to 90%; or the degree of neutralization of about 75%, there are such as sodium counter ion counterionsl gegenions.

Super-absorbent polymer can be polyacrylate and acrylic acid polymer, and it is internal crosslinking and/or surface-crosslinked.Suitable material is described in PCT patent application WO07/047598 or such as WO07/046052 or such as WO2009/155265 and WO2009/155264.In certain embodiments, suitable super-absorbent polymer particles obtains by the preparation technology of the present art, as being more specifically described in WO2006/083584.Super-absorbent polymer can be internal crosslinking, is namely polymerized under the existence of compound with two or more polymerizable groups, and described compound can be free-radical polymerized in polymer network.Available cross-linking agent comprises the ethylene glycol dimethacrylate such as described in EP-A530438, diethylene glycol diacrylate, allyl methacrylate, trimethylolpropane triacrylate, triallylamine, tetraallyloxyethane, as EP-A547847, EP-A559476, EP-A632068, WO93/21237, WO03/104299, WO03/104300, diacrylate described in WO03/104301 and DE-A10331450 and triacrylate, (it not only comprises acrylate group to mixing acrylate as described in DE-A10331456 and DE-A10355401, also comprise ethylenic unsaturated group), or as such as DE-A19543368, DE-A19646484, crosslinker mixture described in WO90/15830 and WO02/32962, and the cross-linking agent described in WO2009/155265.It is crosslinked that super-absorbent polymer particles can be outer surface, or: rear crosslinked).Available rear cross-linking agent comprises the compound comprising and can form two or more groups of covalent bond with the carboxylate group of described polymer.Available compound comprises polyglycidyl compounds, polyaziridine, polyamine, polyamidoamines amine, diglycidyl or poly epihydric alcohol based compound such as described in EP-A083022, EP-A543303 and EP-A937736, polyhydric alcohol as described in DE-C3314019, cyclic carbonate, 2-as described in DE-A19807502 as described in DE-A4020780 oxazolidone and derivant thereof are (as N-(2-ethoxy)-2- oxazolidone), as described in DE-A19807992 two-and poly-2- oxazolidone, 2-oxo tetrahydrochysene-1,3-as described in DE-A19854573 piperazine and derivant thereof, N-acyl group-2-as described in DE-A19854574 oxazolidone, the ring urea as described in DE-A10204937, the bicyclic amide acetal as described in DE-A10334584, oxetanes as described in EP-A1199327 and ring urea and the morpholine-2 as described in WO03/031482,3-diketone and derivant thereof.

Super-absorbent polymer or their granule can have surface modification feature, are such as coated with or are partly coated with coating agent.The example of the absorbent polymer particles of coating is disclosed in WO2009/155265.Coating agent can be those that make absorbent polymer particles more hydrophilic.Such as, it can be hydrophilic (i.e. pyrolysis) silicon dioxide, such as silica gel.Coating agent can be polymer, and such as elastomeric polymer or film property polymer or elasticity film property polymer, it forms elastomer (elasticity) membrane coat on granule.Coating can be homogenizing and/or uniform coating on the surface of absorbent polymer particles.Coating agent can apply by the content of 0.1% to 5%.

Super-absorbent polymer particles can have the granularity in the scope of 45 μm to 4000 μm, and more specifically, particle size distribution is at 45 μm to about 2000 μm, or about 100 μm to about 1000 or in the scope of 850 μm.As known in the art, the particle size distribution of the material of particle form can be measured, such as, by means of dry screen analytic process (EDANA420.02 " particle size distribution).

In some embodiments herein, superabsorbent material is particle form, and described granule has 2mm at the most, or between 50 microns and 2mm or to 1mm, or 100 or 200 or 300 or 400 or 500 μm, or to 1000 or to 800 or to the median granularity of quality of 700 μm; Described median granularity of quality can such as be measured by the method such as described in EP-A-0691133.In embodiments more of the present disclosure, super-absorbent polymer materials is particle form, and in described granule, at least 80 % by weight for having size between 50 μm and 1200 μm and the granule of median granularity of quality between above-mentioned any range combinations.In addition or in another embodiment of the present disclosure, described granule is substantially spherical.In another or additional embodiment of the present disclosure, super-absorbent polymer materials has the granularity of relative close limit, such as wherein major part (such as at least 80 % by weight, at least 90 % by weight or even at least 95 % by weight) granule has between 50 μm and 1000 μm, between 100 μm and 800 μm, the granularity between 200 μm and 600 μm.

support sheet (16; 16 ')

Absorbing structure (13) herein comprises support sheet (16), and described absorbing material (50) is supported and is fixed in described support sheet.Described other material can be support sheet (16 ') or comprises support sheet (16 '), and following content is also applicable to this based sheet (16 ').

This support sheet (16) can be single sheet material or web material, and described web material is divided into each absorbing structure (13) subsequently, particularly paper wood, film, weaving material or non-woven material or these lamilated body any.

In some embodiments herein, support sheet 16 is supatex fabric, such as non-woven webs, such as carded nonwoven, spunbonded non-woven fabrics or meltblown nonwoven fabric, and the non-woven layer comprising these materials any is fit.

These fibers can have natural or artificial source, and the fiber that can be short fiber or continuous filament yarn or formed for original position.The fiber of commercially available acquisition has usually between being less than about 0.001mm to the diameter in the scope being greater than about 0.2mm, and they have several different form.Short fiber (being called staple fibre or chopped strand), continuously ultimate fibre (long filament or monofilament), non-twist continuous long strand (tow) and twisting continuous long strand (yarn).Described fiber can be bicomponent fibre, such as, have core-skin and arrange such as have the different polymer forming described skin and core.Supatex fabric is formed by many methods such as meltblown, spun-bond process, solvent spinning, electrostatic spinning and combing method.The basic weight of supatex fabric is typically expressed as gram/m (gsm).

Supatex fabric as herein described can be made up of hydrophilic fibre; " hydrophilic " describes fiber or the fiber surface of aqueous fluid (such as aqueous body fluids) moistening that can be deposited on these fibers.Hydrophilic and wettability are such as defined by the contact angle of supatex fabric and moisture-inhibiting time according to fluid usually.Be called in the name of being edited by RobertF.Gould in the american chemical society publication thing (1964 all rights reserved) of " Contactangle, wettabilityandadhesion " this has been detailed discussion.Or when the contact angle between fluid and fiber or its surface is less than 90 °, or when fluid be tending towards on the fiber surface spontaneous spread out time (two kinds of situations coexist usually), just say that fiber or fiber surface are by fluid wets (namely hydrophilic).On the contrary, if contact angle is greater than 90 ° and fluid is not spontaneous on whole fiber surface spreads out, then fiber or fiber surface are considered to hydrophobic.

Support sheet (16) herein can be ventilative.Therefore can be used for thin film herein and can comprise micropore.Non-woven material herein can be such as ventilative.Support sheet (16) can have such as 40 or 50 to 300 or to 200m ³/ (m ²x minute) air penetrability, described air penetrability is by EDANA method 140-1-99 (125Pa, 38.3cm ²) measure.Support sheet (16) can alternatively have comparatively low air penetrability, such as, be non-breathable, thus be such as trapped in better on the surface of the movement comprising vacuum.

In some embodiments, support sheet (16) is the fit material of non-woven layer, the fit web of non-woven layer of such as SMS or SMMS type.

In order to easily form described undulation portion, support sheet (16) can have and is less than 60gsm, or is such as less than 50gsm, such as 5gsm to 40gsm, or to the basic weight of 30gsm.

Support sheet (16) can have CD ductility or MD ductility.

In an embodiment herein, support sheet (16) has undulation portion, described undulation portion folding (fluctuating) becomes described first passage and second channel (26), and is optionally folded into described other passage or its part.Such as, undulation portion can extend on the about full longitudinal size of passage; They such as can extend to the full average height of absorbed layer (17)/passage, or such as its only at the most 75%, or at the most 50% of the average height of absorbed layer (17)/passage.This contributes to described passage (26) and the fixing absorbing material (50) of described passage (26) of contiguous described each layer.

Undulation portion can utilize described one or more adhesive materials such as described second adhesive material to be attached to the described wall of described passage (26).Alternatively or in addition, support sheet (16) can be attached to described other material the second support sheet (16) such as mentioned above in described passage (26), such as, utilize described first binding agent and/or the second binding agent to adhere to.

adhesive material

Absorbing structure (13) can comprise one or more adhesive materials.In certain embodiments, as mentioned above, it comprises the first adhesive material and/or the second adhesive material in the above described manner.

Absorbent cores herein can comprise another kind of second absorbing structure (13 '), and it can comprise one or more adhesive materials; Following content is applicable to it equally.

Any suitable binding agent all can be used in this object, such as, use so-called hot-melt adhesive.Such as, the hot-melt adhesive that can spray can be used, the production number HL-1620-B of such as H.B.FullerCo. (St.Paul, MN).

Adhesive material not only can contribute to absorbing material to be fixed in support sheet, and its memory period at described disposable product and/or also can contribute to the integrity of the passage kept in absorbing structure/absorbent cores between the operating period.The absorbing material that adhesive material can help avoid significant quantity moves in passage.In addition, when adhesive material is applied in the channel or is applied in the support sheet part overlapped with passage, its can thus contribute to the support sheet of absorbing structure being attached to described wall and/or being attached to another kind of material, as hereafter will more described in detail.

In certain embodiments, the first binding agent (40) and/or the second binding agent (60) can be thermoplastic adhesive materials.

In certain embodiments, the first binding agent (40) can be applied to fiber, thus absorbing material is fixed on the fibrous network in support sheet by formation.Thermoplastic binder fiber partly can contact the support sheet of absorbing structure; If also apply in the channel, then absorbed layer is anchored to support sheet by its (going back).

Thermoplastic adhesive materials can such as allow this type of swelling, and does not rupture and do not apply too much compression stress, described compression decrease uptake polymer beads swelling.Be applicable to thermoplastic adhesive materials (40 of the present disclosure; 60) comprise hot-melt adhesive, it at least comprises the thermoplastic polymer be combined with plasticizer and other thermoplasticity diluent such as tackifying resin and additive such as antioxidant.Exemplary suitable melt adhesive materials (40; 60) be described in EP1447067A2.In certain embodiments, thermoplastic polymer has more than 10, the molecular weight (Mw) of 000 and lower than the glass transition temperature (Tg) of room temperature or-6 DEG C of >Tg<16 DEG C.In certain embodiments, the concentration of the polymer in hot melt is in the scope of about 20 % by weight to about 40 % by weight.In certain embodiments, thermoplastic polymer can be water insensitive.Exemplary polymer is for comprising (styrene) block copolymer of A-B-A tri-block structure, A-B two block structure and (A-B) n radial block copolymer structure, wherein A block is the non-elastomer polymer block usually comprising polystyrene, and B block is this type of pattern of unsaturated conjugated diene or (part) hydrogenation.B block is generally isoprene, butadiene, ethylene/butylene (hydrogenated butadiene), ethylene/propene (hydrogenated isoprene) and their mixture.

Other suitable thermoplastic polymer adoptable is metallocene-polyolefin, and they are the ethene polymers utilizing unit point or metallocene catalyst to prepare.Wherein, at least one comonomer can with vinyl polymerization to prepare copolymer, terpolymer or more senior polymer.Same what be suitable for is amorphous polyolefin or amorphous poly-alpha-olefines (APAO), and they are the homopolymer of C2 to C8 alhpa olefin, copolymer or terpolymer.

Thermoplastic adhesive materials (being generally melt adhesive materials) generally exists in the form of fibers, can by hot-melt adhesive fibrosis.In certain embodiments, thermoplastic adhesive materials forms fibrous network in absorbent polymer particles.Usually, fiber can have the average thickness of about 1 μm to about 100 μm or about 25 μm to about 75 μm, and the average length of about 5mm to about 50cm.Particularly, melt adhesive materials layer can be provided to comprise network structure.In certain embodiments, apply thermoplastic adhesive materials to measure as follows, described amount is every support sheet (16) 0.5 to 30g/m ², or 1 to 15g/m ², or 1 and 10g/m ²or even 1.5 and 5g/m ².

Lower than value 1 at the canonical parameter being applicable to binding agent of the present disclosure can be 60 DEG C, or lower than the loss tangent of value 0.5.Loss tangent at 60 DEG C is associated with the characteristics of liquids of the binding agent under high ambient temperature.Loss tangent is lower, and binding agent shows to obtain more picture solid instead of liquid, that is, the trend of its flowing or migration is less, and binding agent superstructure as herein described trend that is rotten or even avalanche is less in time.Therefore, if absorbent article is used in hot weather, then this value is even more important.

For such as processing reason and/or performance reason, may be it is beneficial that, as can by ASTMD3236-88, use spindle 27,20rmp, preheats 20 minutes at said temperatures, and stirs measured by 10 minutes, described thermoplastic adhesive materials has between 800 and 4000mPas at 175 DEG C, or 1000mPas or 1200mPas or 1600mPas to 3200mPas or to 3000mPas or to 2800mPas or the viscosity to 2500mPas.

Described thermoplastic adhesive materials can have between 60 DEG C and 150 DEG C, or between 75 DEG C and 135 DEG C, or between 90 DEG C and 130 DEG C, or the softening point between 100 DEG C and 115 DEG C, as available ASTME28-99 (Herzog method; Use glycerol) measure.

In an embodiment herein, thermoplastic adhesive component can be hydrophilic, has and is less than 90 °, or is less than 80 ° or be less than 75 ° or be less than the contact angle of 70 °, as available ASTMD5725-99 measures.

mark

Absorbent article of the present invention can comprise mark, and described mark passes on the functional and beneficial effect of absorbent cores passage to consumer.Limiting examples of this type of mark can comprise embossing and their combination of the adhesive phase of printing, egative film figure, top flat and/or acquisition layer.

Can be used for of one type, passes on the existence of passage and the adhesive phase being masked as printing of beneficial effect.In certain embodiments, the goods in core with passage can have the adhesive phase applied with following pattern, the absorbability of described pattern hint passage and other beneficial effect.This adhesive phase can put on substrate such as supporting layer, can put on acquisition layer in certain embodiments, and described acquisition layer can be positioned between top flat and the absorbent cores with passage.In certain embodiments, the adhesive phase of printing can be through top flat visible.

In certain embodiments, fluid such as binding agent can be applied in or be printed onto in the substrate of propelling.Fluid application devices can comprise slit die applicator and substrate carrier.Slit die applicator can comprise slit opening, the first antelabium and the second antelabium, and described slit opening is between the first antelabium and the second antelabium.And substrate carrier can comprise one or more pattern elements, described pattern elements can be suitable for advancing substrate through slit die applicator when binding agent is discharged in substrate by slit die applicator.In operation, when the first surface of substrate is arranged on substrate carrier, substrate carrier advances the slit opening of second surface through slit die applicator of substrate.Then, substrate is compressed off and between slit die applicator and the patterned surfaces of pattern elements.When substrate is compressed off and on, be applied on the second surface of the substrate of propelling from the binding agent of slit die applicator discharge such as lower area, described region has the shape substantially the same with the shape limited by patterned surfaces.In certain embodiments, binding agent can be the color different from substrate.Binding agent can comprise pigment or dyestuff.Other method and apparatus involved by substrate with predetermined pattern binding agent being applied to propelling is disclosed in United States Patent (USP) 8,186, in 296.In certain embodiments, the ink that suprabasil fluid can be adhesive-free is printed on.

As used herein, term " pattern " refers to ornamental or distinctive design, that it needs not to be repetition or imitate, following pattern can be included but not limited to: marbling shape, chequer, speckle stricture of vagina shape, vein shape, assemble shape, geometry shape, mottled, helical form, web-like, arrangement shape, mottling, textured, spiral type, ring-type, profile shape, lacery, chessboard trellis, T_Starburst, circular standing shape, lightning shape, bulk, textured, pleats shape, cup-shaped, concave shape, convex-shaped, twisted shape, taper and their combination.Pattern instance for the adhesive phase printed is found in Figure 17 A, in 17B, 17C and 18.In Figure 17 A to 17C, the pattern of the adhesive phase printed in the bending line of the adhesive phase of printing and Figure 18 can indicate one or more beneficial effects of consumer's passage.Such as, passage can serve as conduit, and it dispenses fluid to more comfortable position, can indicate or pass on the available fluid of goods to distribute and comfort level through top flat to the adhesive phase of the visible printing of care-giver simultaneously.

As mentioned above, absorbing structure of the present invention generally includes one or more other materials to cover absorbed layer, such as another material layer.This layer can comprise binding agent, such as, on the surface of being intended to the absorbed layer contacting absorbing structure, comprise binding agent.Therefore, described other material can be intended to the surface of the described absorbed layer placed adjacent of absorbing structure on comprise adhesive material.In certain embodiments, described other material layer can be capturing material layer, and described capturing material layer can have and is printed onto binding agent on it to form patterned appearance.Therefore, binding agent is printed on the surface adjacent with absorbent cores of acquisition layer.Except have passage and be printed onto the printing on the surface adjacent with absorbent cores of acquisition layer the absorbent cores of adhesive phase except, goods also can comprise top flat, and wherein printed adhesive phase can be through top flat visible.In certain embodiments, printed article (ink or there is the binding agent of ink) can be positioned at top flat from it, and ink is printed material there, and described printing can use digital printed carrying out.

In certain embodiments, absorbent article can comprise the figure be printed onto on egative film.When absorbent cores is loaded with fluid, absorbing material will expand, and expand particularly, and the passage not comprising absorbing material will not expand towards egative film.Can utilize this difference, because when fluid is absorbed, passage can form recess and become and more easily be perceived through egative film.When absorbent article absorption fluids, these recess will become more obvious.

Will be proportional with absorbed Fluid Volume by the degree of depth of these recess that backsheet side is formed by passage, and the present inventor finds, by providing coupling to care-giver or at least indicating the egative film printed article of passage area to improve visual appearance for care-giver.Therefore, egative film printed article can comprise and substantially mate the shape of passage and/or the line of position or curve.

Egative film figure, such as shown in figs, can indicate the attribute of care-giver's passage similarly.In certain embodiments, unique visual beacon of passage can be egative film printed article.In certain embodiments, egative film printed article can be the curve of the shape of approximate passage and profile, line or other pattern.In certain embodiments, goods can comprise adhesive phase and the egative film figure of printing, their combinatorial association effect or do individually to strengthen some passage aspect.

As shown in figure 19, the approximate shape of passage and the egative film figure of profile can be arranged such that they fit in the absorbent core region of absorbent article and do not extend beyond this type of region, thus more clearly pass on the beneficial effect of passage to care-giver.Show the exemplary egative film comprising the approximate shape of passage and the figure of profile below.This egative film length A longitudinally can be such as 478mm, and its width P ' transversely can be 196mm.Centrage along the longitudinal direction of egative film is illustrated by line C ', and therefore half length B ' is 239mm.The distance F ' visually indicating the distance between the figure of internal channel to be shown as between line D ' that centrally line C ' obtains and E '.Distance F ' can be 22mm.The distance I ' visually indicating the distance between the figure of outer tunnel to be shown as between line G ' that J ' along the line obtains and H '.Distance I ' can be 37.5mm.Line J ' and K ' is parallel to centrage C ' to make, and obtains along the terminal of the figure visually indicating internal channel, and terminal refers to from the initial point terminated at its figure of centrage C '.Distance between these terminals in longitudinal direction is illustrated by line L '.This distance can be 198mm.Line M ' and N ' is parallel to centrage C ' to make, and obtains along the terminal of the figure visually indicating outer tunnel, and terminal refers to from the initial point terminated at its figure of centrage C '.Distance between these terminals in longitudinal direction is illustrated by line O '.This distance can be 158mm.What C ' along the line obtained visually indicates the figure of internal channel and visually indicates the distance between the figure of outer tunnel to can be 6mm.In a preferred embodiment that wherein all length all provides with mm: A '=478; P '=206; L '=205; O '=165; I '=43; And F '=22.

The relative length of any above-mentioned line all can be expressed as ratio, and can be accurate, or can add or deduct 2% individually or in conjunction with the utilization of other length ratio, 3%, 4%, 5%, 7%, or the tolerance of 10% is expressed, and length can be rounding to the multiple of immediate integer or 5 after tolerance percentage ratio is employed.

Applicant finds, is following those: (a) A ' and L ' for the ratio indicating one or more beneficial effects of passage to be even more important; (b) B ' and L '; (c) P ' and F '.In certain embodiments: the ratio of A ' and L ' will 2.2 to 2.7, preferably 2.3 to 2.5 scope in, more preferably it will be 2.4.In certain embodiments: the ratio of B ' and L ' will 1.0 to 1.4, preferably 1.1 to 1.3 scope in, more preferably it will be 1.2.In certain embodiments: the ratio of P ' and F ' will 8.0 to 9.8, preferably 8.5 to 9.4 scope in, more preferably it will be 8.9.

In addition, in certain embodiments, the figure of internal channel is visually indicated not extend beyond the region of outer tunnel self and/or wherein to there is the region of absorbent cores, and in certain embodiments, the figure of outer tunnel is visually indicated not extend beyond the region of outer tunnel self and/or wherein to there is the region of absorbent cores, and in certain embodiments, visually indicate the figure of internal channel and outer tunnel not extend beyond the region of internal channel and outer tunnel self and/or wherein to there is the region of absorbent cores.

In addition, goods can comprise other or additional visual cues of instruction absorbent cores passage, such as, and embossing.Embossing can be carried out on top flat or in absorbent cores, or in certain embodiments, and what can exist top flat and absorbent cores is multi-layer embossed.Such as, heat embossing can be carried out by small―gap suture setting value to passage (wherein there is not super-absorbent polymer) to exist to strengthen vision.Any embossing can be carried out to help instruction absorbent cores passage individually or in conjunction with printed article.In addition, also can online (during the building block of assembling absorbent article) or before this type of assembling such as wherein the supplier of the building block place of preparing described building block self to top flat, core or both carry out any embossing.

In certain embodiments, printed adhesive phase or egative film printed article can be the major part or even whole patterns that cover absorbent cores.In other embodiments, printed adhesive phase or egative film printed article can only be printed in discrete region.Such as, in certain embodiments, printed adhesive phase or egative film printed article can be printed as not overlapping or crossing with absorbent cores passage.As used herein, term " overlap " refers to the part covering something, or has common region.As used herein, term " intersects " object referring to and mutually cross over or pass through or the object narrowing and merge.

In order to ensure absorbent article components (comprising graphic absorbent article parts) correctly orientation when being attached to other absorbent article components, aligning can be utilized.To use system will definitely be comprised to the position detected on absorbent article components, described position and set point (it can be desired by operator or machine set position) are compared.Described system can regulate the placement of absorbent article components according to described comparative result.Such as, the position of the adhesive phase of absorbent cores passage and printing can be detected, and the repeat length (being described in United States Patent (USP) 6,444,064 and 6,955, in 733) of printed adhesive phase can be changed via length control system.Alternatively, system can be used detect and control assembly relative to the lengthwise position of the desired locations be positioned on absorbent article, the position being wherein subsequently attached to second component at its place's first component is changed to guarantee that first component is in desired position.This can use equalization position based on repeated detection, performs with the deviation of desired position, or is performed by the detection of frequency lower than each attachment incidence rate.In addition, system can detect the primary importance on the first absorbent article components and the second position on the second absorbent article components, and wherein primary importance and the second position relative to each other can compare and compare with set point or desired offset position.Described system can regulate the placement of the first absorbent article components and/or the second absorbent article components according to described comparative result.The combination of multiple detection method can be used.In certain embodiments, the eye impression aimed at and optimize printed article and absorbent cores passage can be utilized.

In certain embodiments, no matter any printed article, be the adhesive phase of printing, egative film figure or certain combination, all can mate or substantially mate shape or the profile of absorbent cores passage.In certain embodiments, printed article will not necessarily mate or be associated with shape or the profile of absorbent cores passage, but will otherwise pass on or indicate existence and/or the beneficial effect of consumer's passage.

absorbent article, such as diaper

Absorbing structure (13) herein or absorbent cores (7) can be used for absorbent article such as above-mentioned absorbent article, and can be used for diaper (1) particularly, comprise can the diaper (1) of fastening and (refastenable) training pants, baby or adult diaper, or can be used for absorption pad, such as sanitary towel or adult incontinence undergarments's pad.

Except absorbing structure as described herein (13) or absorbent cores (7), these goods also can comprise top flat and egative film and such as one or more flank or hoop.Top flat or hoop or flank can comprise skin care compositions known in the art or lotion or powder, sheet, comprise U.S.5,607,760; U.S.5,609,587; U.S.5,635,191; U.S.5,643, in 588 describe those.

Goods herein comprise in use towards the top flat of wearer, and such as nonwoven sheet and/or perforate sheet material, comprise apertured formed films as known in the art, and egative film.

Egative film can be liquid impermeable, as known in the art.In certain embodiments, the impermeable egative film of liquid comprises thin plastic film, such as has the thermoplastic film of about 0.01mm to about 0.05mm thickness.Suitable stock footage generally includes and allows steam still to prevent effluent through the gas permeable material of egative film from diaper (1) effusion simultaneously.Suitable backsheet film comprise by TredegarIndustriesInc. (TerreHaute, IN) manufacture and with trade name X15306, X10962 and X10964 sell those.

Egative film or its any part can flexibly extend in one or more directions.By any attachment component known in the art by egative film attachment or other element any joining top flat, absorbing structure/core or diaper (1) to.

Diaper herein can comprise lower limb hoop and/or intercept hoop; Thus goods usually have a pair relative flank and/or lower limb hoop and/or intercept hoop, one centering each is all oriented to adjacent with absorbing structure/core longitudinal side, and along described structure/core longitudinal extension, and mirror image each other on the longitudinal axis of goods usually; If there is lower limb hoop and barrier cuff, then each lower limb hoop is usually from barrier cuff to outside fix.These hoops can along at least 70% length longitudinal extension of goods.Described hoop can have longitudinal edge freely, and described edge can be positioned on the X-Y plane (longitudinal/horizontal) of goods outward, namely in a z-direction.Paired flank or hoop can on the longitudinal axis of goods mirror image each other.These hoops can comprise elastomeric material.

Diaper herein can comprise belt, or such as front waist belt and back waist band, and they can comprise elastomeric material.

Diaper (1) can comprise lateral plate or so-called auricle.Diaper (1) can comprise buckling clamping part with fastening front and rear, such as front waist belt and back waist band.Fastening system can comprise fastening inserted sheet and touch-down zone, and wherein fastening inserted sheet is attached or joins the back zone of diaper (1) to, and touch-down zone is the part in the proparea of diaper (1).

Absorbing structure (13) can be combined with acquisition layer (12) and/or capturing material layer (70) or their system, and absorbent cores (7) or diaper (1) can comprise acquisition layer (12) and/or capturing material layer (70) or their system, and it can comprise the cellulose fibre of chemical crosslinking.This type of crosslinked cellulose fibre can have desired absorption characteristic.The cellulose fibre that Exemplary chemical is cross-linked is disclosed in United States Patent (USP) 5,137, in 537.In certain embodiments, the cellulose fibre of chemical crosslinking and the C between about 0.5 % by mole and about 10.0 % by mole based on glucose monomer ₂to C ₉poly-carboxylic cross-linking agents, or and C between about 1.5 % by mole and about 6.0 % by mole ₂to C ₉poly-carboxylic cross-linking agents.Citric acid is a kind of Exemplary cross linking agents.In other embodiments, polyacrylic acid can be used.In addition, according to some embodiment, crosslinked cellulose fibre has about 25 to about 60, or about 28 to about 50, or the water retention value of about 30 to about 45.For determining that the method for water retention value is disclosed in United States Patent (USP) 5,137, in 537.According to some embodiment, crosslinked cellulose fibre can be fold, twisting curling or they combination (comprised fold, twist with curling).

In certain embodiments, one of upper acquisition layer and lower acquisition layer or both all can comprise non-woven material, described material can be hydrophilic.In addition, according to certain embodiment, one of upper acquisition layer and lower acquisition layer or both also can comprise the cellulose fibre of chemical crosslinking, described fiber or can not form a part for non-woven material.According to an exemplary embodiment, upper acquisition layer can comprise non-woven material (not containing crosslinked cellulose fibre), and lower acquisition layer can comprise the cellulose fibre of chemical crosslinking.In addition, according to an embodiment, lower acquisition layer can comprise the cellulose fibre of the chemical crosslinking mixed mutually with other fiber such as natural or synthetic polymeric fibers.According to exemplary embodiment, this type of other natural or synthetic polymeric fibers can comprise high surface area fiber, thermoplastic bonding fibers, polyethylene fibre, polypropylene fibre, PET, staple fibre, Lyocell fibers and their mixture.Suitable non-woven material for upper acquisition layer and lower acquisition layer includes but not limited to SMS material, and it comprises spunbond layer, meltblown layer and another spunbond layer.In certain embodiments, the non-woven material (non-woven material in particular to having durable hydrophilic coatings) of permanent hydrophilic is desired.Other suitable embodiment comprises SMMS structure.In certain embodiments, non-woven material is porous.

Diaper (1) can comprise the sublevel be arranged between top flat and absorbing structure (13)/absorbent cores (7), and described sublevel can hold and distribute and/or fixing body exudates.Suitable sublevel comprises acquisition layer as known in the art, surge layer and/or feces accumulation layer.Suitable material as sublevel can comprise the open foam of atmospheric air chamber, macropore compression resistant nonwoven highloft thing, large-size particle form perforate and closed-cell foam (macropore and/or micropore), high loft nonwoven fabric, polyolefin, polystyrene, polyurethane foam or granule, comprise multiple circulus be vertically oriented, fibre bundle or as above about the apertured formed films described in genital coversheet.(used herein, term " micropore " refers to and can transmit fluid by capillarity but the material with the average pore size being greater than 50 microns.Term " macropore " refers to following material: the Kong Tai great that described material has and not by capillarity transmit fluid, described material has the hole of the diameter being greater than about 0.5mm (on average) usually, more particularly, there is the diameter being greater than about 1.0mm (on average) but be typically less than 10mm or be even less than the hole of diameter of 6mm (on average).

Method for assembling absorbent article or diaper (1) comprises the routine techniques for constructing and configure disposable absorbent article known in the art.Such as, egative film and/or top flat joined to absorbing structure/core by a series of independent line of the uniform continuous layer of binding agent, the patterned layer of binding agent or binding agent, helical or round dot or they are interconnected.Be called with commodity the binding agent that HL-1258 or H-2031 produce by H.B.FullerCompany (St.Paul, Minnesota) and be found to have gratifying performance.Although top flat, egative film and absorbing structure (13)/core can by the multiple configuration assemblings known, but diaper (1) configuration general description is in following patent: the name that JIUYUE in 1996 authorizes the people such as Roe on the 10th is called the United States Patent (USP) 5 of " AbsorbentArticleWithMultipleZoneStructuralElastic-LikeFi lmWebExtensibleWaistFeature ", 554, the name of authorizing the people such as Buell on October 29th, 1451996 is called the United States Patent (USP) 5 of " DisposablePull-OnPant ", 569,234; The name of authorizing the people such as Robles on the 21st with December in 1999 is called the United States Patent (USP) 6,004,306 of " AbsorbentArticleWithMulti-DirectionalExtensibleSidePanel s ".

prepare the method for absorbing structure (13)

Absorbing structure (13) is herein prepared by any method comprised the steps: deposited to by absorbing material (50) in support sheet (16), such as, be also deposited thereon by described absorbing material (50) subsequently by support sheet described in first (16) being placed on bossing with the shape and size of the described passage (26) that will produce; Thus absorbing material (50) does not remain on described bossing, but is only retained on the remainder of support sheet (16).

In certain embodiments, the absorbing structure (13) with absorbed layer (17) is such as obtained by following method, described absorbed layer has two or more passages (26) of essentially no absorbing material (50) wherein, said method comprising the steps of:

A) feeding machine described absorbing material (50) being fed to the annular surface of the first movement is provided for, such as hopper;

B) transporter support sheet (16) being sent to the annular surface of the second movement is provided for;

C) annular surface of the first movement is provided, it has one or more absorbed layer (17)-thus forms reservoir, described reservoir has longitudinal size and average length, perpendicular lateral dimension and mean breadth, and the depth dimensions vertical with both them and mean depth, with the voidage for receiving described absorbing material (50) wherein, described reservoir comprises the raised item of one or more longitudinal extension substantially, described raised item does not have voidage, such as there is mean breadth W and average length L separately, described mean breadth is at least 4% or at least 5% of the mean breadth of reservoir, and described average length be the average longitudinal dimension of reservoir at least 5% and at the most 30%, described reservoir is used for described absorbing material (50) to be sent to be adjacent and the annular surface of close described second movement.

D) surface of the second movement is provided, it has the shell comprising one or more ventilative or partly ventilative storage tanks, described storage tank is used for receiving described support sheet (16) thereon or wherein, they have receiving area and have the setting strip of one or more longitudinal extension substantially, described setting strip can be air-locked and have separately for such as at least 2.5mm, 0.5 × W to 1.2 × W mean breadth W ', be the average length L of such as about 0.8 × L to 1.2 × L ';

Wherein said ventilative shell is connected to one or more ancillary vacuum system, and described vacuum system is used for promoting support sheet (16) and/or described absorbing material (50) to keep thereon, and

Wherein in meeting point, the annular surface of described first movement and described shell are adjacent one another are at least in part and be closely adjacent to each other during the transmission of described absorbing material (50), and make during the transmission of described absorbing material (50), each setting strip substantially completely adjacent and next-door neighbour raised item;

E) utilize described feeding machine that absorbing material (50) is fed to the annular surface of described first movement, be fed at least in reservoir described in it;

F) optionally, any absorbing material (50) on described raised item is removed;

G) simultaneously, described support sheet (16) is sent to the annular surface of described second movement, is sent on described storage tank or wherein;

H) in described meeting point, optionally utilize the annular surface of only described first movement that described absorbing material (50) is sent to the part as described below of support sheet (16), on the described receiving area that described part is in described storage tank or wherein; With

I) 1) the described absorbing structure (13) to step g applies adhesive material (i.e. the first adhesive material (40)); And/or

I) 2) before step f, or with its side by side, but under any circumstance all in step g) before, to described support sheet (16) apply adhesive material (i.e. the second adhesive material (60)).

Step I) 1) can relate to and spraying in described first adhesive material of fibers form in described absorbed layer (17) or its part, such as substantially spray continuously, therefore it is also present in described passage (26).

Step I) 2) slot type coating or spraying support sheet (16) can be related to, be coated with continuously, or such as to correspond to the pattern application of passage (26) pattern.

Described reservoir can be formed by a large amount of groove and/or chamber, and they have the voidage for receiving described absorbing material (50) wherein.In certain embodiments, the mean breadth W of (each) bar can be at least 6mm, or such as at least 7mm, and/or at least at least 7% of the mean breadth of corresponding reservoir, or such as at least 10%.

Described groove and/or chamber such as can have the full-size transversely of at least 3mm separately, and the beeline in substantial lateral size wherein between the chamber of direct neighbor and/or groove is less than 5mm.The chamber of direct bump, adjacent bar and/or groove can have the volume of the one or more or whole volume in the adjacent chambers or groove exceeding them, described adjacent chambers or groove directly contiguous described bar or another (therefore from certain remove further).

The reservoir of the annular surface of described first movement can be ventilative at least in part, and the annular surface of described first movement can comprise the cylindrical surface with described reservoir, and described cylindrical surface rotatably moves around stator, and comprises vacuum chamber; The shell on the surface of described second movement can be cylindrical, rotatably moves around stator, comprises the auxiliary vacuum chamber being connected to described ancillary vacuum system.

The method can be intended to production absorbent cores (7) or structure, and it comprises above-mentioned absorbing structure (13; 13 ') two or more in; Such as two these type of layers, they are superposed on one another, make the absorbing material 50 of the absorbing material 50 of ground floor and another second layer adjacent one another are and are clipped between the support sheet 16 of ground floor and the support sheet 16 of the second layer.

The method can relate to provides press member, such as pressure roll, it can apply pressure on absorbing structure (13), and usual absorbing structure (13) thus absorbing material (50) is sandwiched between support sheet (16) and another kind of material; It is upper or be applied on any described other material/layer of being placed on absorbed layer (17) that described pressure can be applied to described support sheet (16), mentioned above as this part.This pressure applying can be carried out optionally only to apply pressure on the passage (26 and/or 26 ') of absorbing structure (13), such as be applied to support sheet (16) correspond to passage (26) and therefore (on opposing surfaces) does not comprise in the part of absorbing material (50), thus avoid absorbing material described in compacting (50) self; And/or be applied to described other material and correspond to passage (26 ') and therefore (on opposing surfaces) does not comprise in the part of such as its support sheet (16 ') of absorbing material (50), thus avoid absorbing material described in compacting (50) self.

Therefore, described press member can have protruding pattern of exerting pressure, and described applying pattern corresponds to the described pattern of raised item and/or the described pattern of described setting strip, corresponds to the pattern of setting strip in some cases.

Dimension disclosed herein and value should not be understood to be strictly limited to described exact numerical values recited.On the contrary, except as otherwise noted, each such dimension is intended to represent the function equivalent scope near described value and this value.Such as, disclosed dimension " 40mm " is intended to represent " about 40mm ".

Unless expressly excluded, or in other words limit to some extent, each document quoted herein comprises any cross reference or relevant patent or patent application, is all incorporated herein by reference in full accordingly.Quoting of any document is not to its prior art as disclosed herein or claimed any invention; or its individually or with any combination of other list of references any, or with reference to, instruction, suggestion or disclose any accreditation that this type of is invented.In addition, when any implication of term in the literature or definition and any implication of same term in the document be incorporated to way of reference or define is conflicted, should be as the criterion with the implication or definition of giving this term in the literature.

Although illustrate and describe the present invention by specific embodiments, it is obvious for those of skill in the art that, can make without departing from the spirit and scope of the present invention many other change and amendment.Therefore, appended claims is intended to contain this type of changes all in the scope of the invention and amendment.

Claims (12)

1. an absorbent article, the absorbent cores comprising top flat, egative film and be arranged between described top flat and described egative film, described absorbent cores comprises the absorbed layer comprising absorbing material, described absorbing material comprises super-absorbent polymer materials, it is characterized in that described absorbed layer comprises the passage being substantially free of described super-absorbent polymer materials, and described egative film comprises figure, described figure is similar to the shape of described passage.

2. absorbent article according to claim 1, it also comprises the acquisition layer be arranged between described top flat and described absorbent cores.

3., according to absorbent article in any one of the preceding claims wherein, wherein absorbent cores passage has non-linear shape; Preferably wherein said absorbent cores passage becomes profile.

4. according to absorbent article in any one of the preceding claims wherein, wherein said absorbent article also comprise be arranged on printer's ink between described top flat and described absorbent cores, binding agent or the two.

5. absorbent article according to claim 4, wherein said ink, described binding agent or the two print in a pattern.

6. absorbent article according to claim 5, wherein said pattern mates the shape of described absorbent cores passage substantially.

7. the absorbent article according to any one of claim 2-6, wherein said ink, described binding agent or the two be printed on described top flat.

8. the absorbent article according to any one of claim 2-6, wherein said ink, described binding agent or the two be printed on described acquisition layer.

9., according to absorbent article in any one of the preceding claims wherein, wherein said top flat comprises embossing.

10., according to absorbent article in any one of the preceding claims wherein, wherein said top flat comprises hole.

11. according to absorbent article in any one of the preceding claims wherein, wherein said absorbed layer at least comprises first passage and second channel, wherein said first passage and described second channel longitudinal extension substantially, and wherein said first passage is positioned at first longitudinal sidepiece of described absorbed layer, described second channel is positioned at second longitudinal sidepiece of described absorbed layer.

12. according to absorbent article in any one of the preceding claims wherein, and wherein said absorbed layer is substantially free of cellulosic material.